chore: Update pharmsol to 0.28.2

[Siel]

Summary

• update pharmsol to 0.28.2

Tests

• cargo test
• cargo check
• cargo fmt --check

[github-actions]

Bencher Report

Project	PMcore
Branch	chore/pharmsol-0.28.2
Testbed	mhovd-pgx

Click to view all benchmark results

Benchmark	Latency	Benchmark Result milliseconds (ms) (Result Δ%)	Upper Boundary milliseconds (ms) (Limit %)
bimodal_ke_npag	📈 view plot 🚷 view threshold	3,881.80 ms (-20.38%) Baseline: 4,875.18 ms	6,141.31 ms (63.21%)
bimodal_ke_npod	📈 view plot 🚷 view threshold	1,460.30 ms (+1.28%) Baseline: 1,441.78 ms	2,111.23 ms (69.17%)
bimodal_ke_postprob	📈 view plot 🚷 view threshold	525.16 ms (+42.02%) Baseline: 369.77 ms	926.91 ms (56.66%)

🐰 View full continuous benchmarking report in Bencher